database structure

lib/snippets/database/patch_actions/RenameColumn.ts

@@ -0,0 +1,26 @@
+import { Serializable } from '../classes/Serializable';
+
+export class RenameColumn implements Serializable {
+  public column: string;
+  public new_name: string;
+
+  public constructor (column: string, new_name = null) {
+    if (new_name === null) {
+      const regex = /(?<column>[a-z_]+) (?<new_name>[a-z_]+)/iu;
+      const res = regex.exec (column);
+      if (res === null || typeof res.groups === 'undefined')
+        throw new Error ('invalid string to deserialize');
+
+      this.column = res.groups.column;
+      this.new_name = res.groups.new_name;
+      return;
+    }
+
+    this.column = column;
+    this.new_name = new_name as unknown as string;
+  }
+
+  public serialize (): string {
+    return `${this.column} ${this.new_name}`;
+  }
+}